We are live on ! Find out more
William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+1.99%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$29.4B
AUM Growth
+$519M
Cap. Flow
+$281M
Cap. Flow %
0.96%
Top 10 Hldgs %
23.58%
Holding
1,987
New
99
Increased
752
Reduced
666
Closed
108

Top Buys

Rank Stock Value
1
ABNB icon
Airbnb
ABNB
+$45.2M
2
CHWY icon
Chewy
CHWY
+$31.5M
3
U icon
Unity
U
+$23.3M
4
RYAN icon
Ryan Specialty Holdings
RYAN
+$22.4M
5
AMZN icon
Amazon
AMZN
+$21.5M

Top Sells

Rank Stock Value
1
IDXX icon
Idexx Laboratories
IDXX
+$37.7M
2
GD icon
General Dynamics
GD
+$33.5M
3
ECL icon
Ecolab
ECL
+$31.7M
4
JNJ icon
Johnson & Johnson
JNJ
+$20.9M
5
UBER icon
Uber
UBER
+$19.2M

Sector Composition

Rank Sector Weight
1 Technology 26.19%
2 Healthcare 19.81%
3 Financials 11.61%
4 Consumer Discretionary 10.68%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VOX icon
1001
Vanguard Communication Services ETF
VOX
$5.88B
$799K ﹤0.01%
5,674
+5
+0.1% +$727
PSA icon
1002
Public Storage
PSA
$61.4B
$798K ﹤0.01%
2,685
-40
-1% -$12.6K
SCHD icon
1003
Schwab US Dividend Equity ETF
SCHD
$108B
$798K ﹤0.01%
32,244
+27,879
+639% +$709K
DAL icon
1004
Delta Air Lines
DAL
$60B
$796K ﹤0.01%
18,682
+1,121
+6% +$45.8K
SSNC icon
1005
SS&C Technologies
SSNC
$19.3B
$795K ﹤0.01%
11,457
-1,408
-11% -$104K
CMA
1006
DELISTED
Comerica
CMA
$793K ﹤0.01%
9,851
+2,672
+37% +$192K
WH icon
1007
Wyndham Hotels & Resorts
WH
$5.51B
$791K ﹤0.01%
10,244
-93
-0.9% -$6.67K
LNT icon
1008
Alliant Energy
LNT
$18.2B
$790K ﹤0.01%
14,113
+5
+0% +$295
TWO
1009
Two Harbors Investment
TWO
$1.26B
$779K ﹤0.01%
30,706
-2,288
-7% -$60K
DELL icon
1010
Dell
DELL
$320B
$778K ﹤0.01%
14,748
-2,023
-12% -$101K
GIL icon
1011
Gildan
GIL
$10.6B
$778K ﹤0.01%
21,322
+2,727
+15% +$100K
CLR
1012
DELISTED
CONTINENTAL RESOURCES INC.
CLR
$775K ﹤0.01%
16,787
-333
-2% -$12.6K
MIDD icon
1013
Middleby
MIDD
$5.29B
$774K ﹤0.01%
4,539
-72
-2% -$13K
IBDO
1014
DELISTED
iShares iBonds Dec 2023 Term Corporate ETF
IBDO
$770K ﹤0.01%
29,600
– –
ACWX icon
1015
iShares MSCI ACWI ex US ETF
ACWX
$12B
$769K ﹤0.01%
13,872
+50
+0.4% +$2.85K
VIRT icon
1016
Virtu Financial
VIRT
$5.05B
$769K ﹤0.01%
31,459
+8,782
+39% +$223K
VRNS icon
1017
Varonis Systems
VRNS
$5.26B
$769K ﹤0.01%
12,636
+150
+1% +$9.4K
COR icon
1018
Cencora
COR
$59.2B
$765K ﹤0.01%
6,401
+9
+0.1% +$1.08K
RIG icon
1019
Transocean
RIG
$6.39B
$764K ﹤0.01%
201,531
+97,280
+93% +$354K
CTSH icon
1020
Cognizant
CTSH
$26.7B
$761K ﹤0.01%
10,258
-854
-8% -$63K
HAS icon
1021
Hasbro
HAS
$13.6B
$760K ﹤0.01%
8,521
+199
+2% +$19.3K
IEV icon
1022
iShares Europe ETF
IEV
$1.7B
$753K ﹤0.01%
14,448
-1,082
-7% -$58.6K
SUNS
1023
DELISTED
SLR Senior Investment Corp. Common Stock
SUNS
$752K ﹤0.01%
48,631
– –
ECPG icon
1024
Encore Capital Group
ECPG
$2.15B
$748K ﹤0.01%
15,172
-3,920
-21% -$186K
WK icon
1025
Workiva
WK
$4.01B
$748K ﹤0.01%
5,305
-222
-4% -$30.1K
39 40
41
42 43

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return

William Blair & Company's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair & Company held 1,987 positions worth $29.4B, up 1.8% from $28.9B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2021 filing shows 99 new, 752 increased, 666 reduced and 108 closed positions. Its largest new stake was Ryan Specialty Holdings: 709,555 shares worth $24M. The largest sale was Idexx Laboratories, an estimated $37.7M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 26% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2021 buy was Ryan Specialty Holdings: 709,555 shares worth $24M.
  • William Blair & Company added most to Airbnb in Q3 2021, an estimated $45.2M increase.
  • William Blair & Company's biggest Q3 2021 reduction was Idexx Laboratories, cutting an estimated $37.7M.
  • William Blair & Company fully exited Slack Technologies, Inc. in Q3 2021, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.4B portfolio in Q3 2021.
  • William Blair & Company opened 99 new positions and closed 108 in Q3 2021.
  • William Blair & Company's portfolio value rose 1.8% quarter-over-quarter to $29.4B.

Based on William Blair & Company's 13F filing for Q3 2021, filed 12 Nov 2021.